JPS63159026A - Automatic replacing device for mold - Google Patents

Abstract

PURPOSE:To greatly enhance accuracy in the automatic replacement of a mold to a molding machine by providing two specific sensing means to sense the kind of molds. CONSTITUTION:When a new mold M is transferred to a table 106 of a replacing truck 10, a first sensor 500' senses the kind of the mold. The same is distinguished by a distinguishing means input beforehand, and if distinguished as the same kind, the new mold M is transported to a preliminary temperature regulating station 4 by the replacing truck 10. The new mold M is preheated in the preliminary temperature regulating station 4, and then transported to a molding machine 15 to be set in the molding machine 15. While the new mold M is transferred to be set in the molding machine 15, a second sensor 500 distinguishes the kind of the new mold M, and if distingnished as the same kind, the new mold M is continuously transported as it is to complete a series of replacement. As the kind of mold is sensed by the two sensors, a mold of wrong kind is never transported to the molding machine.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an automatic mold changeover device.

(Conventional technology) Automatic mold setup! ! ! 1′! In the A position, Utsukai 58-15
As shown in Publication No. 5214, there is a machine that has a setup stand attached adjacent to the molding machine, and the setup of the mold is changed through this setup stand. In order to automate the transport of molds within the factory, a setup trolley for transporting the molds is provided, and a molding machine is placed adjacent to the travel path of the setup trolley. A device is being developed in which mold setup changes are performed via a trolley. In such a mold setup inspection device, it is important to ensure that the new mold installed in the molding machine is not mistaken when replacing the mold, that is, changing the setup. An identification code indicating the type thereof is provided, and a detection means for detecting the identification code is arranged on the carry-in side of the molding machine to detect whether or not the mold carried into the molding machine is a desired one, If the mold is of the wrong type, the mold is automatically prevented from being brought in.

(Problems to be Solved by the Invention) However, in the automatic mold changeover device, since one detection means detects whether or not the mold is the desired one, the mold type Detection accuracy cannot be said to be sufficient, and if the detection means misreads the identification code of the mold and continues to carry the mold even though it is not the desired mold, It is also possible for the mold to collide with the molding machine and be damaged.

The present invention has been made in view of the above circumstances, and its purpose is to improve the accuracy of preventing the wrong type of mold from being carried into a molding machine.

(Means and operations for solving the problem) In order to achieve this object, the present invention includes a first plate to which one side of the split mold is attached and a second plate to which the other side is attached. a molding machine that relatively displaces the two plates by a drive means, and a setup truck that transports the mold to the molding machine, and when changing the setup, the mold is moved between the two plates from the setup truck. A mold automatic setup changing installation configured to automatically transport the mold, comprising: a mold carrying means for transporting the mold transported to the molding machine by the setup cart between the two plates; and the two plates. The type of mold that is being moved between
a first mold type detection means for detecting the mold while it is moving; and a second mold type detection means provided on the setup trolley for detecting the type of mold placed on the setup trolley. A mold type detection means, and a mold detected by the first and second mold type detection means,
a determining means for determining whether or not the mold is of a predetermined type; and at least one of the molds detected by the first and second mold type detection means is of a predetermined type. A control means for stopping the movement of the mold when the movement of the mold is different; and an automatic mold changeover device comprising:

With the above-described configuration, the type of mold is detected by the two first and second mold type detection means, and the accuracy of detecting the type of mold is improved.

(Example) Embodiments of the present invention will be described below based on the drawings.

In the overall layout in Figure 1, A is the mold tool maintenance area, B is the old mold storage area, and C is the molding machine automatic operation area. There are two horizontal injection molding machines 41!1 on the negative side of the
5 and two preliminary temperature control stations 4 are installed, and a stocker 6 for storing molds is installed on the other side, and mold setup of the horizontal injection molding machine 15 is carried out via a setup trolley 10. It is done. A reversing machine 30 is provided between this molding machine automatic operation area C and the mold tool maintenance area A adjacent thereto, and a setup trolley 10 arranged in the molding machine automatic operation area C and the mold tool maintenance area When the mold is transferred to and from the transport vehicle 20 traveling in A, the posture of the mold is changed by a single reversing machine 30. In other words, the molds are stacked horizontally on the setup trolley 10, that is, the fixed molds and the nf moving molds are placed side by side, and the transfer trolley 20
The molds are stacked one above the other, that is, the fixed mold and the movable mold are stacked one above the other. It is designed to be placed. This carrier 20 communicates with each crane yard D, and sling work (crane hooking work) is performed on the carrier 20.

In the automatic operation area C of the molding machine, there is also a pre-temperature control device 4' that adjusts the hot water supplied to the pre-temperature control station 4.
, mold temperature control device 1 for adjusting hot water supplied to molding a15
5', a centralized control ggffiU that controls the molding machine 15 and the mold temperature control device 15', and a pre-temperature control side that controls the pre-temperature control station 4 and the pre-temperature control device 4'. A trolley control panel U that controls the W panel U-1 and the first setup trolley 10
-2 is arranged, and the control I! JtU-1 and U-2 receive output signals from the central control fiU and automatically control the setup trolley 10 and the like.

Transport vehicle (Figs. 2 and 3) The transport vehicle 20 has a plurality of transport rollers 201 arranged in parallel on its upper surface, and a sprocket 202 is provided at one end of each transport roller 201. In the figure, 206 is a chain that is driven to rotate in both forward and reverse directions by a hydraulic motor 204.
06 is a sprocket) A hook is provided between the sprocket 202 and the hydraulic motor 204.

The transport vehicle 20 runs on rails 22 shown in FIG. 1, and the drive source for the wheels 208 is a hydraulic motor 210. The above-mentioned hydraulic motors 204 and 210 are operated by selective operation of the operation switch 212. In the figure, 214 is a reel for electric wire.

Reversing machine (FIGS. 4 and 5) The reversing machine 30 has a frame 301 whose outer surface 301a is an arcuate surface, and which is rotatable around a center O and is rotationally driven by a hydraulic motor 302. Ru. The birth number 303 in Figure 4 is a chain, and this chain 30
3, the hydraulic motor 302 and frame 301 are linked.

Two protrusions 304 are provided on the outer surface 301a of the frame 301 at an interval of 90 degrees, and the protrusions 304 are received by a stopper 308 provided on a base 306, so that the rotation range of the frame 301 is 90 degrees. It is said to be in the range of degrees. The stow/bar 308 is adapted to be moved in and out by a cylinder 310. The frame 301 has two mold bearing surfaces 3
14 is provided, and the included angle between the negative mold support surface 314 and the other mold support surface 314 is 90 degrees. Each mold support surface 314 is formed by a plurality of short conveyance rollers 316 and a long conveyance roller 318.
are arranged in parallel at the corner sandwiched by both mold support surfaces 314,
These conveyance rollers 316 are rotatable. On the other hand, the long conveyance roller 318 is driven to rotate in both forward and reverse directions by a hydraulic motor 320.
2 is a chain, and this chain 322 is passed between the long conveyance roller 318 and the hydraulic motor 320.

Setup Car (FIGS. 6 to 12) The setup cart 10 includes a frame 102, two tables 106 that run while being guided by rails 104 laid on the frame 102, and a set-up truck 10 that is arranged on each table 106. A hooker 108 provided on the frame 102 and a setup trolley lO
The setup trolley 10 is configured to run on rails 12 laid in the automatic operation area C of the molding machine.

In FIG. 6, 112 is a wheel, and the wheel 112 is the hydraulic motor 1.
14.

The clamping means 110 includes a pair of clamp arms 1 provided at the lower part of the frame 102, as shown in FIG.
16, each clamp arm 116 is swingable about a rotation axis 118, and is moved to an operating position (FIG. 7, solid line) where both clamp arms 116 sandwich the positioning protrusion 14 by a hydraulic cylinder 120, respectively. and both clamp arms 11
The positioning protrusion 14 is provided on the floor surface of each station, and the positioning protrusion 14 is capable of assuming an inoperative position (FIG. 7, dashed line) in which the positioning protrusion 6 is expanded. The setup cart 1O is positioned by this.

The two tables 106 disposed on the frame 102 are connected by a connecting road 121 and run together on the frame 102, and their driving source is a hydraulic motor (not shown). On the frame 102, stoppers 122 are fixedly installed at both ends in the front-rear direction, and two movable stoppers 124 are provided at the center in the front-rear direction.
It is raised and lowered between an operating position and a non-operating position.

As shown in FIG. 8, on the table 106, a short conveyance roller 128 is rotatably disposed at the front end (end on the side of the reversing machine 30), and a long conveyance roller 130 is rotatably disposed at the rear end. It is freely arranged. These conveyance rollers 12
A plurality of 8.130 are arranged in parallel in the width direction, and a plurality of transport rollers 12
8.130 forms a mold mounting surface, the short roller 128 receives the fixed mold M-a, and the long roller 13
0 is supposed to receive the movable mold M-b.

The hooker 108 is disposed between the conveyance roller 128 and the conveyance roller 130, and the molds are transferred using the hooker 108. That is, the hook 108, as shown in FIGS. 9 to 11,
Two hooks 1 provided on the slide table 132
34, and each hook 134 is connected to the hydraulic cylinder 1, respectively.
36, it can take an operating position in which it engages with the engagement rod 8 provided on the mold M, and a non-operation position in which the engagement rod 8 is released. The slide table 132 is movable while being guided by a guide rail 138 extending in the width direction, and is driven by a hydraulic motor 140 and a screw 142. On the other hand, slide table 13
As shown in FIG. 12, the guide rail 138 that guides the second
The setup cart 10 can be moved in the width direction by a hydraulic motor 146. As a result, the hooker 108 is made to extend in the width direction of the setup trolley IO under the two-stage stroke by the combination of the guide rail 138 and the slide table 132, which are movable together, and as described later, It is used for transferring the mold M between the setup trolley IO and the pre-temperature control station 4 and between the stocker 6.

The horizontal injection molding machine 15 has a fixed gouly plate 152 and a movable gouey plate 154. Here, the fixed gouly plate 152 is arranged on the reversing machine 30 side (left side as viewed from the drawing), and the movable gouly plate 154 is placed on the reversing machine side. 30 (on the right side as viewed in the drawing), the fixed mold M-a is attached to the fixed Goi plate 152, and the movable mold M-b is attached to the movable Goi plate 154. It has become. The movable goo plate 154 is driven by a hydraulic cylinder 168, and both plates 152
During the interval between and 154, that is, during the molding operation, the mold M is opened and closed.

The horizontal injection molding machine 15 also has a fixed soybean rate 15.
2 and the movable die plate 154, as shown in FIG. It is designed to guide M-b. A mold conveying button 158 is disposed between each row of conveying rollers 156.

As shown in FIGS. 13 and 14, the mold conveying bushing 158 includes a guide rail 160 extending in the row direction of the conveying roller 156, a hook 162 that moves while being guided by the guide rail 160, and a hook 162 that moves while being guided by the guide rail 160. A band-shaped button (not shown) configured to be connected to move the hook 162 and one end of the guide rail 160, that is, a setup trolley l.
The reel 164 is provided at the end opposite to the reel 164 for winding the band-shaped bushing, and a hydraulic motor 166 rotates the reel 164. On the other hand, an intermediate stand 40 is disposed in the gap between the horizontal injection molding machine 15 and the setup trolley lO, and this intermediate stand 40 is provided with a conveyance roller 402 rotatably and an extension guide rail 404. Accordingly, the hook 162 of the mold conveyance bushing 158 is movable up to the extension guide rail 404.

As a result, the mold conveying bushing 158.

This mold conveying button 158 is used as a means for carrying in or out the mold M into the horizontal injection molding machine 15, and transfers the mold M between the horizontal injection molding machine 15 and the setup trolley IO. It looks like this.

Mold type detection During the mold carrying route when carrying the mold from the setup trolley 10 to the molding machine 15, and on the setup trolley 10, there are diagrams shown in FIGS. 1, 6, 8, and 9. , FIG. 12, FIG. 13, and FIG. 14, in order to detect the type of mold, detectors 500 and 500' are provided as first and second mold type detection means, respectively. Of the molds M, the fixed mold M-a is provided with an identification mark 510 indicating its type, as shown in FIG.

As shown in FIG. 16, the identification mark 510 includes one circular reference recess DO and a plurality of circular identification recesses DI-D.
8, and each recess Do-08 has a molding a15 of the mold M.
PI at equal pitches along the loading direction (vertical direction in Figure 1)
(40 mm in the example). Although eight identification recesses DIND8 are shown in FIGS. 15 and 16, depending on the type of mold M,
The number of identification recesses and their formation positions are varied. That is, some molds do not have the identification recess D5 in the one shown in FIG. 16, and some molds do not have the identification recesses DI and D2. In this way, the type of mold, such as the width of the mold, the injection pressure, the type of molded product to be obtained, etc., are encoded using the identification recesses.

The detector 500 is disposed in the vicinity of the intermediate stand 40 to identify a holding pace 501, one reference sensor SO held on the holding base 501, and a plurality of (number corresponding to the maximum number of identification recesses), respectively. It includes sensors S1 to S8. The sensors SO to S8 are arranged in series in the mold M carrying-in direction at the same pitch Pl as the recesses DO to D8.

As a result, when the mold M is to be carried from the setup cart IO to the molding machine 15 via the intermediate stand 40, the identification mark 510 of the mold M passes close to the detector 500, and at this time The distance between the two (Fig. 16) is approximately 3 mm in the embodiment. Each of the sensors 5o-58 is turned off, for example, when the recesses DO to D8 of the mold M are opposed to each other, and turned on when the other parts are opposed to each other. In other words, the sensors SO to S8 are in the close state of gold 5M (opposed to the part other than the recess DO-08) and in the separated state (
(opposed to the recesses DO to D8), such a sensor 5o-sa is
Each can use a proximity switch. Also,
The diameter of the reference recess DO is as small as 22 mm in the embodiment, and the diameter of each identification recess Di-D8 is 26 mm.
It's getting bigger. Furthermore, each sensor 5o
The sensing region -sa is smaller than the diameter of the recesses DO to D8, as illustrated by the symbol E in S8.

The detector 500 detects the type of mold M in the following manner. While the mold M is being transferred from the setup cart 10 to the intermediate platform 40, the reference sensor SO first moves to the reference recess DO.
, and this reference sensor SO is turned off. From this state, when the mold M is slightly moved in the direction of loading into the molding machine 15, the reference sensor SO is turned ON. Immediately after this reference sensor SO is reversed from OFF to ON, the operating states of sensors S1 to S8 are read at once.

That is, since the diameter of the four identification parts D1 to D8 is larger than that of the reference recess DO, immediately after the reference sensor SO is turned on from OFF, the identification recess D for each sensor S1 to S8 is
A state is reached in which the sensor 5l-38 facing the i-D8 can be turned on. and.

The type of mold is detected depending on which sensor among the sensors S1 to S8 is turned on.

The detector 500' is provided on the side of the table 106 on which the cutting die M is placed for setup change, and when the cutting die M is placed a on the table 106, the cutting die M is placed on the table 106. A detector 500' is arranged to face the identification mark 510 provided on the mold M. This detector 500' has the same configuration as the detector 500 described above, and the detector 500' includes sensors SO to S
It has 8. In this detector 500', the reference sensor SO matches the reference recess DO of the identification mark 510,
When the reference sensor SO is turned off, the sensor 5l-
38 operating state can be read, and the type of the cutting die M can be detected even when the cutting die M is placed on the setup trolley IO and the cutting die M is in a stationary state. It has become.

First, a signal corresponding to the type of a new mold M to be changed (hereinafter referred to as a cutting mold) is sent to the mold type input means 6.
01 to the plate spacing control means 602. As a result, the plate interval control means 602 controls the molding machine 15.
The hydraulic cylinder 168 is controlled to set the distance between the plates 152 and 154 to a predetermined value depending on the type of cutting die to be changed. This interval adjustment is performed immediately after the setup cart 10 stops at the cutting die M delivery position. The mold type input means 601 may be configured with a keyboard or the like, and the mold type may be input at each setup change, or the mold type input means 601 may be used to input the order of the mold types to be used in advance. It is also possible to input the information and have it automatically output to the hydraulic motor 168 from the plate spacing control means 602 at each setup change according to this order.

On the other hand, the setup trolley IO is moved to the stocker 6 storing the cutting mold M to be newly set for the molding machine 15, and the hooker 108 mounted on the setup trolley IO moves the cutting die M to the molding machine 15. The mold M is transferred from the stocker 6 to the table 106 of the setup cart 10. Note that a conveyance roller (not shown) is rotatably disposed on the floor of the stocker 6.
When the mold M is transferred between the setup truck 10 and the stocker 6, the mold M can be moved on the conveyance rollers.

When the cutting die M is transferred to the table 106 of the setup cart IO, the detector 500' faces the identification mark 510 of the cutting die M, and the detector 500' identifies the type of die. To detect. This detection result is determined by the determining means 603.
It is compared with the mold type input (used) by the mold type input means 601. Then, the control means 604 determines that if the mold types are the same as the discrimination result of the discrimination means 603,
The cutting mold M is moved to the pre-temperature control station 4 using the setup trolley 10.
4, and if the mold types are not the same as the discrimination result of the discrimination means 601, the hydraulic motor 114 of the setup trolley 10
Stops driving. Another aspect when the mold types are not the same is that the hook 16 is
2 may be made inoperative.

When the cutting die M is transported to the pre-temperature control station 4, the hooker 108 mounted on the setup trolley 10 sets the cutting die M in the pre-temperature control station 4, and the cutting die M is preheated within this pre-temperature control station 4.

When the preheating of the die-cut mold M is completed, the die-cut die M is again transferred from the pre-temperature control station 4 to the setup carriage 10 by the hooker 108 mounted on the setup carriage IO, and the molding machine 15 transported to.

When the setup cart 10 arrives at the molding machine 15, the molding f
The mold M in i15 (hereinafter referred to as the old mold) is pushed out to the vacant table 108 of the setup cart 10. After this old mold is placed 81a on the table 106, the table 106 moves on the setup trolley lO, and the cutting mold M'f:
Set it on molding machine 15? tP preparations are made.

Next, the cutting die M loaded on the table 106 is
By the pusher 158 (hook 162) attached to the forming fi 15, the cutting die M begins to be moved from the setup cart 10 to the forming a 15 via the intermediate stand 40, and during this movement, With model M still moving,
The type of mold is detected by the detector 500.

The detection result by the detector 500 is compared with the mold type input by the mold type input means 601 by the 1 discrimination means 603. Then, the control means 604
The determining means 60 controls the hook 162 as a loading means.
If the mold types are the same as the result of the determination in step 1, the molds are continued to be carried in to complete a series of setup changes, and if the mold types are not the same, the molds are stopped to be carried in.

The old mold M loaded on the setup trolley 10 is
0 and stored in an empty stocker 6, or if maintenance is required, it is transported from the molding machine automatic operation area C to the mold tool maintenance area A.

If maintenance of the above old mold is required, the old mold M is 1
It is transported to the reversing machine 30 by the setup cart 10.

The transfer of the old mold M from the setup trolley 10 to the reversal v130 involves the hooker 108 mounted on the setup trolley 10 and the reversal 4! ! This is done in cooperation with the rotational drive of the long roller 318 of 30. At this time, the reversal a30 is a mold supporting surface that receives or takes away the old mold M depending on whether the mold that requires maintenance is a fixed mold M-a or a movable mold M-b. 3!4 is selected in advance, and before the old mold M is received, the mold support surface 314 is set.

The reversing machine 30 inverts the old mold M, which has been picked up side by side from the setup cart IO, by 90 degrees, so that the fixed mold M-a and the movable mold M-b are in a vertical position. A conversion is made. In the old mold M after the attitude change, the part that requires maintenance is located at E.

After the attitude is changed by the inversion fi30 in this way,
The old mold M is transferred from the reversing machine 30 to the transport vehicle 20 by rotationally driving the long roller 318 of the reversing machine 30 and the roller 201 of the transport vehicle 20. Transport trolley 20
ni t'? The old mold M that has been removed is transported to a crane yard D by a transport vehicle 20, and is subjected to necessary maintenance.

Mold M after maintenance is completed in molding machine automatic operation area C
Since the case of conveying to the above case is the reverse of the above case, the explanation thereof will be omitted.

(Effects of the Invention) As described above, in the present invention, the type of mold is detected by the two first and second mold type detection means,
Since the accuracy of detecting the type of mold is improved, it is possible to improve the accuracy of preventing the wrong type of mold from being carried into the molding machine. Therefore, damage to the mold can be prevented as much as possible.

[Brief explanation of the drawing]

Fig. 1 is a layout explanatory diagram showing the layout of the automatic mold changeover device according to the present invention, Figs. 2 and 3 are views showing a conveyance truck, and Figs. 4 and 5 are views showing a reversing machine. Figure 6 is a side view of the setup truck, and FIG. 7 is an enlarged view of positioning clamp means provided on the setup truck. FIG. 8 to FIG. 12 are diagrams showing a slide table and a hook provided on the table of the setup cart. Figures 13 and 14 are diagrams showing the hooks provided at the bottom of the mold installation space of a horizontal injection molding machine, and Figure 15 is a diagram showing the identification mark on the mold indicating the mold type and its detector. FIG. 16 is a partial plan view showing details of the identification mark indicating the mold type and the detector, and FIG. 17 is a block diagram showing an example of the control circuit of the present invention. U: Control panel M: Mold M-a: Fixed mold M-b: Movable mold 10: Setup trolley 15: Molding machine 152.154: Die plate 168: Hydraulic cylinder (driving means) 158: Butsusha (metallic Mold carrying means) 500: Detector 500': Detector 51O: Identification code Figure 5 Crotch Figure 11 Figure 12

Claims (1)

[Claims] (1) A molding machine having a first plate to which one of the split molds is attached and a second plate to which the other is attached, and in which both plates are relatively displaced by a driving means;
A setup cart for transporting the mold to the molding machine, and an automatic mold setup change device that automatically transports the mold from the setup cart between the two plates at the time of setup change. a mold carrying means for transporting the mold transported to the molding machine by the setup trolley between the two plates; and a type of mold being moved between the two plates;
a first mold type detection means that detects the mold while it is moving; and a second mold type detection means that is provided on the setup trolley and detects the type of mold placed on the setup trolley. A mold type detection means, and a mold detected by the first and second mold type detection means,
a determining means for determining whether or not the mold is of a predetermined type; and at least one of the molds detected by the first and second mold type detection means is of a predetermined type. An automatic mold changeover device comprising: control means for stopping the movement of the mold when the movement is different.